八十岁的人英语怎么说

八十岁的人英语可以用 "eighty-year-old" 来表示。这个词是由两个单词组成的："eighty" 和 "year-old"。"Eighty" 是数词，表示数字 80，"year-old" 则是形容词，表示年龄。所以 "eighty-year-old" 就是指八十岁的人。

下面是一些英文例句及其中文翻译：

My grandfather is an eighty-year-old man. 我的祖父是一个八十岁的男人。
She's an eighty-year-old woman who still goes to the gym every day. 她是一个八十岁的女人，每天都去健身房。
The eighty-year-old man walked slowly down the street. 八十岁的男人慢慢地走在街上。
The elderly couple had been married for sixty years. 这对老年夫妇已经结婚六十年了。